And the Russian looked in merciless mood on Court Suzanne Lenglen as she set up a second round clash with Japan's Ayumi Morita.

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Ivanovic had been distraught after a first-round defeat by Shahar Peer in San Diego last week and she looked set for another early exit when Azarenka served for the match on Monday night.

BBC: Ana Ivanovic beats Victoria Azarenka at Cincinnati Open

And it looked as though the Briton would be progressing to the next round when she coolly broke Martic for a third time to lead 3-2 in the second set.

BBC: Elena Baltacha, Melanie South & Katie O'Brien go out